Table 3:

Sonographic features stratified by histopathologic tumor type and by risk category

ULTRASOUND		Invasive Cancer	DCIS	BRCA-1	BRCA-2	Family History	TOTAL
BI-RADS DESCRIPTORS
SHAPE	OVAL	4/20 (20%)	0	3/6 (50%)	0	1/16 (6%)	4/26 (16%)
	ROUND	1/20 (5%)	0	0	0	1/16 (6%)	1/26 (4%)
	IRREGULAR	15/20 (75%)	6/6(100%)	3/6 (50%)	4/4(100%)	14/16 (88%)	21/26(80%)
ORIENTATION	PARALLEL	7/20 (35%)	2/6 (40%)	3/6 (50%)	2/4 (50%)	4/16(25%)	9/26 (35%)
	NOT PARALLEL	13/20 (65%)	4/6 (60%)	3/6 (50%)	2/4 (50%)	12/16(75%)	17/26(65%)
MARGINS	CIRCUMSCRIBED	0	0	0	0	0	0
	INDISTINCT	9/20 (45%)	3/6 (50%)	1/6 (17%)	2/4 (50%)	9/16 (56%)	12/26(46%)
	ANGULAR	1/20 (5%)	1/6 (17%)	2/6 (33%)	0	0	2/26 (8%)
	MICROLOB.	4/20 (20%)	2/6 (33%)	2/6 (33%)	1/4 (25%)	3/16 (19%)	6/26 (23%)
	SPICULATED	6/20 (35%)	-	1/6 (17%)	1/4 (25%)	4/16 (25%)	6/26(23%)
ECHO PATTERN	ANECHOIC	0	1/6 (17%)	1/6 (17%)	0	0	1/26 (4%)
	HYPERECHOIC	1/20 (5%)	0	0	1/4 (25%)	0	1/26 (4%)
	COMPLEX	0	1/6 (17%)	0	0	1/16 (7%)	1/26 (4%)
	HYPOECHOIC	18/20 (90%)	4/6 (66%)	5/6 (83%)	3/4 (75%)	14/16 (86%)	22/26(84%)
	ISOECHOIC	1/20 (5%)	0	0	0	1/16 (7%)	1/26 (4%)
POSTERIOR FEATURES	NONE	15/20 (75%)	4/6 (66%)	5/6 (83%)	2/4 (50%)	12/16 (75%)	19/26(73%)
	ENHANCEMENT	1/20 (5%)	0	1/6 (17%)	0	0	1/26 (4%)
	SHADOWING	4/20 (20%)	1/6 (17%)	0	1/4 (25%)	4/16 (22%)	5/26 (19%)
	COMBINED PATTERN	0	1/6 (17%)	0	1/4 (25%)	0	1/26 (4%)
CALCIFICATIONS	NONE	19/20 (95%)	5/6 (83%)	6/6(100%)	4/4(100%)	14/16 (88%)	24/26(92%)
	OUTSIDE A MASS	1/20 (5%)	0	0	0	1/16 (6%)	1/26 (4%)
	INTRADUCTAL	0	1/6 (17%)	0	0	1/16 (6%)	1/26 (4%)
ASSOCIATED FEATURES	NONE	16/20 (80%)	5/6 (83%)	5/6 (83%)	2/4 (50%)	14/16 (86%)	21/26(81%)
	ARCHITECTURAL DISTORTION	3/20 (15%)	1/6 (17%)	1/6 (17%)	1/4 (25%)	2/16 (14%)	4/26(15%)
	EDEMA	1/20 (5%)	0	0	1 (25%)	0	1/26(4%)
VASCULARIZATION	NOT ASSESSED	17/20 (85%)	5/6(83%)	6/6(100%)	2/4 (50%)	14/16(87%)	22/26 (84%)
	INTERNAL	1/20 (5%)	1/6(17%)	0	2/4 (50%)	0	2/26(8%)
	VESSEL IN RIM	2/20 (10%)	0	0	0	2/16(13%)	2/26 (8%)